You'll be taken to a search box where you can type in a particular title to see if it is on the Accelerated Reader list.

OR, you can click the "Advanced Search" tab at the top and search by Title, Author, ISBN and even topic and subtopic! There is also an option to search by ATOS Readability Level, which basically tells you what grade level (and month of that grade) for which the book is appropriate.

Finally, there is a "Collections" tab, which lets you simply pick books from lists of literary award-winners, state-specific award winners, and books picked by librarians.